| 摘要 |
PURPOSE:To drastically save the operation labor of a user required for calling a mobile station even when the mobile station is in call disable state. CONSTITUTION:In this telephone system having an extension telephone set 2, a mobile station 5, a base station 3 for radio communication with the mobile station 5 and main device 1 for controlling the connection of the extension telephone set 2 and the base station 3, the extension telephone set 2 is provided with an operating key 12d for inputting a call back request command when it is disable to terminate a call at any arbitrary mobile station 5, and the main device 1 is provided with a storage part 11c for storing the extension number of the mobile station 5, position information and the extension number of the extension telephone set 2 and a control part 11a for storing the extension number of the call originating side extension telephone set 2 and the extension number of the mobile station 5 in the storage part 11c when the call back request command is inputted, and for establishing the call between the mobile station 5 and the extension telephone set 2 based on the extension number stored in the storage part 11c when the mobile station 5 enables communication and the position information of the mobile station 5 is updated and registered.
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